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1500 questions
7
votes
1 answer
Why don't small wounds leave scars?
I am wondering, why do big, deep wounds leave scars and small ones do not?
Krzysztof Majewski
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Can one's body temperature affect the quality of his/her sleep?
If so, how does it influence our sleep? And what can we do to improve the quality of sleep in regards to adjusting our body temperature?
nalzok
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7
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2 answers
Can humans acclimate to longer or shorter days?
After watching The Martian, I had falsely assumed that a day on mars is significantly longer than on earth, but it is actually only 40 minutes longer.
However, the question for me still remained: Can humans acclimate to shorter/longer days?
A more…
Premier Bromanov
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7
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Can quitting smoking cause stomach problems?
Say a person quits smoking (cold turkey), can it cause frequent bowel movements like 3-4 times a day and this frequent bowel movement lasting for month or more maybe. And because of frequent bowel movement sometimes there can be blood in stool.
Can…
Totoro
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Water and wrinkled skin. Is being under water for long dangerous?
After spending extended time in a bath, humans develop wrinkled skin. Is wrinkled skin the only effect of the immersion? Could a human spend extended time periods in water without causing some permanent damage? For sake of the question, let's say 7…
user1840
7
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0 answers
Does inadequate analgesic treatment of acute pain increase the risk of its chronification
There was some discussion in comments to another answer that I think are worth it to pose this as its own question.
Does insufficient (analgesic) treatment of acute pain increase the risk of its chronification (e.g. via continued pain…
Narusan
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7
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2 answers
How can one measure if vitamins are really helping a patient to delay hair loss?
(Inspired by an answer to a different question on a related topic.)
I'm guessing there would have to be a period to measure the current rate of hair loss before making changes on current diet and habits and after that period the patient would start…
JorgeArtware
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1 answer
Wrist (radial) artery vs thigh (femoral) artery route for angiography
Angiography of the heart is generally performed via artery of upper thigh, the femoral artery. This artery is larger and easier to access but patient has to remain lying down for a few hours after the procedure.
In recent years, artery at the wrist…
rncardio
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7
votes
2 answers
Does staying at high altitudes increase your stamina?
Let's say someone lives at sea level and then stays at an altitude of 2'500 m for three weeks. Her body will adapt by increasing the amount of red blood cells. In the end, her stamina will be as good as it was at sea level (given comparable amount…
Gregor Botero
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7
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1 answer
Does oral consumption of animal cancer cells increase your chance of getting cancer?
I came across of this question when I was cooking a beef dish the other day.
If the beef I used for cooking came from a cow that had cancer, and even worse, if part of the beef I used in a dish actually contained cancer cells, could consuming the…
Chris Gao
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How is adding up action potentials equivalent to measuring the direction of depolarization vectors?
An ECG of the heart measured from lead II looks like this:
I have seen two ways of arriving at this image, the first is by considering the depolarization and the repolarization vectors and their direction's relative to lead II, like in the image…
Cosmic Dust
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votes
1 answer
What does metformin do to treat polycystic ovarian syndrome?
Metformin is a drug used to treat diabetes but one of its off-label uses is to treat Polycystic Ovarian Syndrome. What does metformin do for someone who has PCOS but does not have diabetes? Is metformin necessary to treat PCOS?
user1656
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7
votes
1 answer
What does current research show regarding the use of sunscreen in deeper skin tones?
I've struggled to find anything at all in the literature that specifically investigates the use of sunscreen as a preventative measure against sun damage in people with deeper skin tones.
Furthermore, I've found almost nothing in the literature that…
Nathaniel Oats
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7
votes
1 answer
Gas from cigarette smoke
If a person walks indoors after smoking, they carry dust with them. But what about the gases from the smoke? Do those stick to the person or persist in the area and continue to pose a threat?
user193661
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7
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2 answers
Can N95 face masks filter out benzopyrene, polycyclic aromatic hydrocarbons or formaldehyde?
The Question: Can N95 face masks filter out benzopyrene, polycyclic aromatic hydrocarbons or formaldehyde?
Background: Pan-frying, stir-frying, and deep-frying typically involve heating oil to a high temperature, resulting in a great amount of smoke…
Dick Grayson
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